IPILPS Workshop ANSTO April 2005 ICHASM & ISOLSM by Dr. Matt Fischer

ICHASM

Tiles, Evaporation and...

… modes How ICHASM

RS modes

Parameterisations Soil T: (0-5, 5-15, 15-50, cm; 1-2 m) WR 150 mm, WG 40 mm, WC = 0.1*A veg *A leaf *A Tile, WN = inf.

‘Time-invariant’ surface var’s. "/data3/mjf/FORCING/FORCING_EQY1_MUNICH_IPILPS1.txt” "/data3/mjf/CHASM/chasm_current/OUT_CHASM/MUNICH/” EQUIL 0. HEIGHT 20. Z0G 0.01 Z0N RCMIN 40. MMFVEG MMLAI WRMAX 150. ALBV 0.15 ALBG 0.2 ALBN 0.75 Z0V 0.1 IYRS 20. IDAYS 365 TS 281. WR 75. WN 0. RHON 100. EOF 0.

ICHASM Isotope module H 2 O reservoirs are well-mixed with inputs Mixing: RN = RN 1 + RN 2 Fractionation: R = R 0 f  -1)  kin = (1-h)nC D 10 3, 0.5 < n < 1, C D = 28.5 ( 18 O), 25.1( 2 H)  evap =  kin +  eq Selection: ‘run-off’ = excess - max. storage capacity

LSDRV: forcing variables CHASM: Prec. mixing LSEB1: skin temperature, evaporation LSEB2: soil T. and snow melt LSMB: water reservoirs ICHASM

CHASM & PILPS How ICHASM Tropical rainforestGrassland (Desborough 1999)

EQY1: Tumbarumba

EQY1: Manaus

EQY1: Munich

Overview How ICHASM works, it’s tile structure and 4 water reservoirs (WG, WR, WC, WN) + isotopes, parameterisation of hydrological process (evaporation, run-off) Results from ICHASM at different timescales, EQY1 How ISOLSM works, soil, vegetation, hydrology and isotope modules

ISOLSM

ISOLSM

Parameterisations Soil : (0-10, 10-40, cm, 1-2, 2-4, 4-6 m) WR ~6 m, WC = 0.1*(LAI+SAI)*A T

Time invariant surface var’sTime invariant surface var’s

"/data3/mjf/FORCING/FORCING_EQY1_MUNICH_IPILPS1.txt”

LSM Isotope module How ICHAS M Evaporation : Leaf moisture : Resistances:

ISOLSM

Conclusions...

iPILPS

P Soil